使用C＃在MQTT mosquitto中自簽名的x509證書問題

Question

我在C＃中使用mqtt庫，並遵循此URL。 http://www.embedded101.com/Blogs/PaoloPatierno/entryid/366/mqtt-over-ssl-tls-with-the-m2mqtt-library-and-the-mosquitto-broker ，當我連接我的網絡時，通過實現此URL客戶端到本地服務器發生以下錯誤：-

C:\Program Files\mosquitto>mosquitto -c mosquitto.conf -v
1438001198: mosquitto version 1.4 (build date 27/02/2015 21:01:03.50) starting
1438001198: Config loaded from mosquitto.conf.
1438001198: Opening ipv4 listen socket on port 8883.
Enter PEM pass phrase:
1438001224: New connection from 10.112.154.82 on port 8883.
1438001224: OpenSSL Error: error:140890C7:SSL routines:ssl3_get_client_certifica
te:peer did not return a certificate
1438001224: Socket error on client <unknown>, disconnecting.

我的代碼是：-

X509Certificate certificate = new X509Certificate(@"D:\POC\Abhinav\cert\cert\m2mqtt_ca.crt", "india@123");  
MqttClient client = new MqttClient("10.112.154.82", 8883, true, new X509Certificate(certificate));      
string clientId = new Guid("b0ca37b1-8a90-4a59-9665-fd8504357165").ToString();
client.Connect(clientId);  

錯誤：

c# Error:-{"A call to SSPI failed, see inner exception."}  

誰能建議我如何使用mosquitto在mqtt中實施證書。

Answer 1

似乎mosquitto代理正在等待用於客戶端身份驗證的客戶端證書。 如上所述，M2Mqtt僅支持服務器身份驗證。 在此處閱讀mosquitto文檔： http ://mosquitto.org/man/mosquitto-conf-5.html似乎“ require_certificate”設置為true（需要客戶端證書）。 您需要將其設置為false。

保羅

Answer 2

我知道現在回答還為時已晚，但是對於任何人都遇到過類似的問題。 解決方案： 在本地計算機上將證書作為根證書安裝 ，並將兩個證書文件參數都傳遞為null並將加密設置為TLSV1.2示例：

var client = new MqttClient(IPAddress.Parse(mqttBrokerHost), 8883, true,null, null, MqttSslProtocols.TLSv1_2);

Answer 3

對於客戶端證書，您需要根據您的CA，證書和私鑰創建PFX文件。 在命令行上使用openssl：

openssl pkcs12 -export -out <OutputName>.pfx -inkey client.key -in client.crt -certfile mosquitto.org.cer

代碼C＃與M2MQTT連接：（此示例中的OutputName為client.pfx）

X509Certificate certRootCa = X509Certificate.CreateFromCertFile(Application.StartupPath + "/caRoot.crt");
X509Certificate2 certClient = new X509Certificate2(Application.StartupPath + "/client.pfx", "password");

MqttClient client = new MqttClient("10.112.154.82", 8883, true, certRootCa, certClient, MqttSslProtocols.TLSv1_2);

string clientId = new Guid("b0ca37b1-8a90-4a59-9665-fd8504357165").ToString();

client.Connect(clientId);